[RISCV] Remove unnecessary calls MCRegister::id(). NFC

Author: topperc

llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp

@@ -1286,7 +1286,7 @@ struct RISCVOperand final : public MCParsedAsmOperand {
   static std::unique_ptr<RISCVOperand>
   createReg(MCRegister Reg, SMLoc S, SMLoc E, bool IsGPRAsFPR = false) {
     auto Op = std::make_unique<RISCVOperand>(KindTy::Register);
-    Op->Reg.RegNum = Reg.id();
+    Op->Reg.RegNum = Reg;
     Op->Reg.IsGPRAsFPR = IsGPRAsFPR;
     Op->StartLoc = S;
     Op->EndLoc = E;
@@ -1358,8 +1358,8 @@ struct RISCVOperand final : public MCParsedAsmOperand {
   static std::unique_ptr<RISCVOperand> createRegReg(MCRegister Reg1,
                                                     MCRegister Reg2, SMLoc S) {
     auto Op = std::make_unique<RISCVOperand>(KindTy::RegReg);
-    Op->RegReg.Reg1 = Reg1.id();
-    Op->RegReg.Reg2 = Reg2.id();
+    Op->RegReg.Reg1 = Reg1;
+    Op->RegReg.Reg2 = Reg2;
     Op->StartLoc = S;
     Op->EndLoc = S;
     return Op;